webenda wrote:healey36 wrote:Wayne, you must get quite the rumble running stuff on that hollow-core door.
Yes.
NOISE LEVELS (for the train in the image.)
Not running: 37 dBA, 0 dBC
Running at 6VDC: 78 dBA, 76 dBC
Here are some common sound levels measured in A-weighted decibels (dBA):
0 dBA: The quietest sound a healthy human ear can hear
10 dBA: Normal breathing
20 dBA: Leaves rustling, mosquito buzzing
30 dBA: Whispering
37 dBA: Train room with ticking wall clock and computer fans running
40 dBA: Quiet office or residential area, light rain
50 dBA: Moderate rainfall, refrigerator
60 dBA: Normal conversation, electric toothbrush
70 dBA: Washing machine, dishwasher
76 dBA: Lionel train running on a hollow core door
80 dBA: Noisy restaurant, vacuum cleaner, garbage disposal
85 dBA: Blender, heavy traffic
90 dBA: A lawnmower, hair dryer
100 dBA: A motorcycle or a construction site
110 dBA: Shouting in ear, rock concert or jackhammer
120 dBA: Thunder
130 dBA: An aeroplane taking off 100m away
135 dBA: An air raid siren
140 dBA: Threshold of pain
150 dBA: A handgun
180 dBA: A rocket launch